If you’re married, you may wonder whether you should file joint or separate tax returns. The answer depends on your individual tax situation. In general, it depends on which filing status results in the lowest tax. But keep in mind that, if you and your spouse file a joint return, each of you is “jointly and severally” liable for the tax on your combined income. And you’re both equally liable for any additional tax the IRS assesses, plus interest and most penalties. That means that the IRS can come after either of you to collect the full amount. Although there are “innocent spouse” provisions in the law that may offer relief, they have limitations. Therefore, even if a joint return results in less tax, you may want...